Update nvimrc

nvimrc

@@ -289,7 +289,7 @@ EOF
 
 " Function to eat trailing character when applying iabbrevs.
 " https://stackoverflow.com/questions/11858927/preventing-trailing-whitespace-when-using-vim-abbreviations
-func Eatchar(pat)
+func! Eatchar(pat)
   let c = nr2char(getchar(0))
   return (c =~ a:pat) ? '' : c
 endfunc
@@ -619,6 +619,7 @@ lua <<EOF
   cmp.setup({
     completion = {
       completeopt = 'menu,menuone,noinsert',
+      keyword_length = 3,
     },
     snippet = {
       expand = function(args)
@@ -649,7 +650,11 @@ lua <<EOF
       comparators = {
         function(...) return cmp_buffer:compare_locality(...) end,
       }
-    }
+    },
+    experimental = {
+      native_menu = true,
+      ghost_text = true,
+    },
   })
 EOF